Stack.Contains(Object) Method

Definition

Namespace:

System.Collections

Assembly:

System.Collections.NonGeneric.dll

Source:

Stack.cs

Determines whether an element is in the Stack.

public:
 virtual bool Contains(System::Object ^ obj);

public virtual bool Contains (object? obj);

abstract member Contains : obj -> bool
override this.Contains : obj -> bool

Public Overridable Function Contains (obj As Object) As Boolean

Parameters

obj

Object

The object to locate in the Stack. The value can be null.

Returns

Boolean

true, if obj is found in the Stack; otherwise, false.

Remarks

This method determines equality by calling the Object.Equals method.

This method performs a linear search; therefore, this method is an O(n) operation, where n is Count.

Starting with the .NET Framework 2.0, this method tests for equality by passing the obj argument to the Equals method of individual objects in the collection. In the earlier versions of the .NET Framework, this determination was made by using passing the individual items in the collection to the Equals method of the obj argument.

See also

• Performing Culture-Insensitive String Operations